WARNING: DATA RACE
Read at 0x00c000760470 by goroutine 180:
  gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).windowCrossedACKThreshold()
      pkg/tcpip/transport/tcp/endpoint.go:1312 +0x9e
  gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).SetSockOptInt()
      pkg/tcpip/transport/tcp/endpoint.go:1394 +0x408
  gvisor.dev/gvisor/pkg/sentry/socket/netstack.setSockOptSocket()
      pkg/sentry/socket/netstack/netstack.go:1549 +0x84c
  gvisor.dev/gvisor/pkg/sentry/socket/netstack.SetSockOpt()
      pkg/sentry/socket/netstack/netstack.go:1509 +0x1ad
  gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketOperations).SetSockOpt()
      pkg/sentry/socket/netstack/netstack.go:1501 +0x69d
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux.SetSockOpt()
      pkg/sentry/syscalls/linux/sys_socket.go:541 +0x303
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall()
      pkg/sentry/kernel/task_syscall.go:170 +0x455
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke()
      pkg/sentry/kernel/task_syscall.go:291 +0xb4
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter()
      pkg/sentry/kernel/task_syscall.go:252 +0x109
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall()
      pkg/sentry/kernel/task_syscall.go:227 +0x1b3
  gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute()
      pkg/sentry/kernel/task_run.go:232 +0x1aaf
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run()
      pkg/sentry/kernel/task_run.go:92 +0x308

Previous write at 0x00c000760470 by goroutine 353:
  gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*handshake).execute()
      pkg/tcpip/transport/tcp/connect.go:533 +0x631
  gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).protocolMainLoop()
      pkg/tcpip/transport/tcp/connect.go:1280 +0xfc6